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Role of neutral-particle bombardment in dust–dust interactions in plasmas

Published online by Cambridge University Press:  11 September 2001

Ya. K. KHODATAEV ,
G. E. MORFILL  and
V. N. TSYTOVICH
Ya. K. KHODATAEV
Affiliation:
Scientific Research Center of Thermophysics of Pulsed Action, Russian Academy of Science, 127412 Moscow, Russia
G. E. MORFILL
Affiliation:
Max-Planck Institute fur extraterrestrische Physik, 85740 Garching, Germany
V. N. TSYTOVICH
Affiliation:
General Physics Institute, Russian Academy of Science Moscow, Vavilova str. 38, 117942 Moscow, Russia
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Abstract

It is shown that the interaction of dust with neutral plasma particles can lead to attractive forces between dust particles, both in the case where the distance between dust particles is less than the mean free path of neutral particles and in the case where it is greater. The expressions for attractive forces differs in the two limits only by a numerical coefficient. The additional force of dust interaction is found to be due to the neutrals created by recombination of charged plasma particles on the surface of dust particles. The influence of radiative dust cooling on dust–dust interaction is considered.

Type
Research Article
Information
Journal of Plasma Physics , Volume 65 , Issue 4 , May 2001 , pp. 257 - 272
Copyright
2001 Cambridge University Press

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